//
//  ConvertData.m
//  断点下载PDF
//
//  Created by 徐凯 on 16/5/14.
//  Copyright © 2016年 cqjtu. All rights reserved.
//

#import "ConvertData.h"
#import <objc/runtime.h>

@implementation ConvertData

+ (NSDictionary*)getObjectData:(id)obj{
    
    NSMutableDictionary
    *dic = [NSMutableDictionary dictionary];
    
    unsigned
    int propsCount;
    
    objc_property_t
    *props = class_copyPropertyList([obj class], &propsCount);
    
    for(int i = 0;i < propsCount; i++){
        
        objc_property_t prop = props[i];
        NSString *propName = [NSString stringWithUTF8String:property_getName(prop)];
        id value = [obj valueForKey:propName];
        if(value == nil){
            
            value = [NSNull null];
        }
        else{
            
            value = [self getObjectInternal:value];
        }
        [dic setObject:value forKey:propName];
        
    }
    
    return dic;
    
}

+ (NSData*)getJSON:(id)obj options:(NSJSONWritingOptions)options error:(NSError**)error{
    
    return [NSJSONSerialization dataWithJSONObject:[self getObjectData:obj] options:options error:error];
    
}

+ (id)getObjectInternal:(id)obj{
    
    if([obj isKindOfClass:[NSString class]]||[obj isKindOfClass:[NSNumber class]]||[obj isKindOfClass:[NSNull class]]){
        return obj;
        }
    
    if([obj isKindOfClass:[NSArray class]]){
        
        NSArray
        *objarr = obj;
        NSMutableArray
        *arr = [NSMutableArray arrayWithCapacity:objarr.count];
        
        for(int i = 0;i < objarr.count; i++){
            
            [arr setObject:[self getObjectInternal:[objarr objectAtIndex:i]] atIndexedSubscript:i];
            
        }
        
        return arr;
        
    }
    
    if([obj isKindOfClass:[NSDictionary class]]){
        
        NSDictionary *objdic = obj;
        NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:[objdic count]];
        
        for(NSString *key in objdic.allKeys){
            [dic setObject:[self getObjectInternal:[objdic objectForKey:key]] forKey:key];
        }
        
        return dic;
        
    }
    return [self getObjectData:obj];
    
}
@end
